1 static char help[] = "Tests for KS test\n\n"; 2 3 #include <petscdmswarm.h> 4 #include <petscdmplex.h> 5 #include <petsc/private/petscfeimpl.h> 6 7 /* 8 View the KS test using 9 10 -ks_monitor draw -draw_size 500,500 -draw_pause 3 11 12 Set total number to n0 / Mp = 3e14 / 1e12 = 300 using -dm_swarm_num_particles 300 13 14 */ 15 16 #define BOLTZMANN_K 1.380649e-23 /* J/K */ 17 18 typedef struct { 19 PetscReal mass[2]; /* Electron, Sr+ Mass [kg] */ 20 PetscReal T[2]; /* Electron, Ion Temperature [K] */ 21 PetscReal v0[2]; /* Species mean velocity in 1D */ 22 } AppCtx; 23 24 PetscErrorCode ProcessOptions(MPI_Comm comm, AppCtx *options) 25 { 26 PetscErrorCode ierr; 27 28 PetscFunctionBegin; 29 options->mass[0] = 9.10938356e-31; /* Electron Mass [kg] */ 30 options->mass[1] = 87.62 * 1.66054e-27; /* Sr+ Mass [kg] */ 31 options->T[0] = 1.; /* Electron Temperature [K] */ 32 options->T[1] = 25.; /* Sr+ Temperature [K] */ 33 options->v0[0] = PetscSqrtReal(BOLTZMANN_K * options->T[0] / options->mass[0]); /* electron mean velocity in 1D */ 34 options->v0[1] = PetscSqrtReal(BOLTZMANN_K * options->T[1] / options->mass[1]); /* ion mean velocity in 1D */ 35 36 ierr = PetscOptionsBegin(comm, "", "KS Test Options", "DMPLEX");CHKERRQ(ierr); 37 ierr = PetscOptionsEnd();CHKERRQ(ierr); 38 PetscFunctionReturn(0); 39 } 40 41 static PetscErrorCode CreateMesh(MPI_Comm comm, DM *dm) 42 { 43 PetscFunctionBeginUser; 44 CHKERRQ(DMCreate(comm, dm)); 45 CHKERRQ(DMSetType(*dm, DMPLEX)); 46 CHKERRQ(DMSetFromOptions(*dm)); 47 CHKERRQ(DMViewFromOptions(*dm, NULL, "-dm_view")); 48 PetscFunctionReturn(0); 49 } 50 51 static PetscErrorCode CreateSwarm(DM dm, AppCtx *user, DM *sw) 52 { 53 PetscInt dim; 54 55 PetscFunctionBeginUser; 56 CHKERRQ(DMGetDimension(dm, &dim)); 57 CHKERRQ(DMCreate(PetscObjectComm((PetscObject) dm), sw)); 58 CHKERRQ(DMSetType(*sw, DMSWARM)); 59 CHKERRQ(DMSetDimension(*sw, dim)); 60 CHKERRQ(DMSwarmSetType(*sw, DMSWARM_PIC)); 61 CHKERRQ(DMSwarmSetCellDM(*sw, dm)); 62 CHKERRQ(DMSwarmRegisterPetscDatatypeField(*sw, "w_q", 1, PETSC_SCALAR)); 63 CHKERRQ(DMSwarmRegisterPetscDatatypeField(*sw, "velocity", dim, PETSC_REAL)); 64 CHKERRQ(DMSwarmRegisterPetscDatatypeField(*sw, "species", 1, PETSC_INT)); 65 CHKERRQ(DMSwarmFinalizeFieldRegister(*sw)); 66 CHKERRQ(DMSwarmComputeLocalSizeFromOptions(*sw)); 67 CHKERRQ(DMSwarmInitializeCoordinates(*sw)); 68 CHKERRQ(DMSwarmInitializeVelocitiesFromOptions(*sw, user->v0)); 69 CHKERRQ(DMSetFromOptions(*sw)); 70 CHKERRQ(PetscObjectSetName((PetscObject) *sw, "Particles")); 71 CHKERRQ(DMViewFromOptions(*sw, NULL, "-swarm_view")); 72 PetscFunctionReturn(0); 73 } 74 75 static PetscErrorCode TestDistribution(DM sw, PetscReal confidenceLevel, AppCtx *user) 76 { 77 Vec locv; 78 PetscProbFunc cdf; 79 PetscReal alpha; 80 PetscInt dim; 81 MPI_Comm comm; 82 83 PetscFunctionBeginUser; 84 CHKERRQ(PetscObjectGetComm((PetscObject) sw, &comm)); 85 CHKERRQ(DMGetDimension(sw, &dim)); 86 switch (dim) { 87 case 1: cdf = PetscCDFMaxwellBoltzmann1D;break; 88 case 2: cdf = PetscCDFMaxwellBoltzmann2D;break; 89 case 3: cdf = PetscCDFMaxwellBoltzmann3D;break; 90 default: SETERRQ(comm, PETSC_ERR_ARG_OUTOFRANGE, "Dimension %D not supported", dim); 91 } 92 CHKERRQ(DMSwarmCreateLocalVectorFromField(sw, "velocity", &locv)); 93 CHKERRQ(PetscProbComputeKSStatistic(locv, cdf, &alpha)); 94 CHKERRQ(DMSwarmDestroyLocalVectorFromField(sw, "velocity", &locv)); 95 if (alpha < confidenceLevel) CHKERRQ(PetscPrintf(comm, "The KS test accepts the null hypothesis at level %.2g\n", (double) confidenceLevel)); 96 else CHKERRQ(PetscPrintf(comm, "The KS test rejects the null hypothesis at level %.2g (%.2g)\n", (double) confidenceLevel, (double) alpha)); 97 PetscFunctionReturn(0); 98 } 99 100 int main(int argc, char **argv) 101 { 102 DM dm, sw; 103 AppCtx user; 104 PetscErrorCode ierr; 105 106 ierr = PetscInitialize(&argc, &argv, NULL,help);if (ierr) return ierr; 107 CHKERRQ(ProcessOptions(PETSC_COMM_WORLD, &user)); 108 CHKERRQ(CreateMesh(PETSC_COMM_WORLD, &dm)); 109 CHKERRQ(CreateSwarm(dm, &user, &sw)); 110 CHKERRQ(TestDistribution(sw, 0.05, &user)); 111 CHKERRQ(DMDestroy(&sw)); 112 CHKERRQ(DMDestroy(&dm)); 113 ierr = PetscFinalize(); 114 return ierr; 115 } 116 117 /*TEST 118 119 test: 120 suffix: 0 121 requires: ks !complex 122 args: -dm_plex_dim 1 -dm_plex_box_lower -1 -dm_plex_box_upper 1 -dm_swarm_num_particles 300 -dm_swarm_coordinate_density {{constant gaussian}} 123 124 TEST*/ 125